Making Predictions Answers

An employer uses the linear regression equation to predict the weekly salary, y, of an employee who sells x dollars worth of merchandise. Last week, Joaquin sold $1500 worth of merchandise. The same week, Alex earned $650. Using the regression equation, which is an accurate comparison?

Xavier created a scatterplot and a trend line for data that he collected by comparing the number of minutes he spent playing a game and the number of levels he passed. Video GameAccording to the graph, which combination of minutes played and levels passed seem most likely to be possible?

The equation y = 9.56x + 495.35 represents the number of calories, y, consumed in one day based on a person’s weight, x. Jill consumes 1850 calories daily. Jaxon weighs 120 pounds. Which is an accurate comparison?

A store owner recorded the total number of customers that visited his store at the end of each hour that the store was open. He created the scatterplot, trend line, and equation below based on the data. Store CustomersAssuming that the trend continues, which is the best estimate for the number of hours that the store will have been open when the total customer count is 310?

Steven created the scatterplot and trend line below to model the relationship between the number of innings he pitched and the number of pitches he threw in a baseball game. Baseball PitchesIf Steven threw 87 pitches, about how many innings did he pitch?

Marquis wrote the linear regression equation to predict the cost, y, of x songs purchased. Marquis spent $40 on songs. Which is the best estimate of the number of songs that Marquis purchased?

Angelique makes beaded jewelry. The graph below shows the number of beads on varying cord lengths.JewelryA necklace contains 88 beads. Based on the information above, which is the best estimate for the cord length?

The equation y = 0.625x – 2.7 can be used to predict the number of minutes, y, it takes Kahlil to check x emails. On Monday, Kahlil spent 25 minutes checking emails. On Tuesday, he checked 35 emails. Which is an accurate comparison?

Antonia recorded the number of cups of hot chocolate that were sold at soccer games compared to the outside temperature. The graph below represents her data.Hot Chocolate SalesFor which temperature would the prediction of the number of cups sold be an interpolation?

For the data that are shown on the graph below, within which range of x values can interpolation occur?