Answers 25-26 Summer - Humble ISD CR - Algebra 1 A - 1st Nine WeeksIntroduction to Linear Functions

Point-Slope Form of a Line Answers

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Grace is comparing cell phone plans. A prepaid phone plan costs $0.20 per minute and has no monthly fee. A contracted phone plan costs $50 per month and $0.02 per minute. How will the graphs of the monthly costs of the two cell phone plans compare where x represents minutes purchased in a month?

The prepaid phone plan will have a steeper line and lower y-intercept.

The contracted phone plan will have the same steepness and a higher y-intercept.

The prepaid phone plan will have a less steep line and the same y-intercept.

The contracted phone plan will have a steeper line and same y-intercept.

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Which statements are true about the lines? Select three options.

Line WZ has the same slope as line XY.

Line YX has a greater slope than line ZY.

Line XW has a lesser slope than line YZ.

Line ZW has the same y-intercept as line YZ.

Line XY has a lesser y-intercept than line XW.

A coordinate plane with a line drawn passing through the points (0, 3) and (1,1).

y = –2x + 3

y = 2x + 3

y = x + 3

y = –x + 3

What is the slope of the line represented by the equation y = –x + ?

–

–

StartFraction one-fourth EndFraction.

StartFraction one-half EndFraction.

A coordinate plane with a line drawn passing through the points (0, 3) and (3, 2).

y = –3x + 3

y = 3x – 3

y = 3x –

y = –x + 3

The graph represents revenue in dollars as a function of greeting cards sold.

y = x

y = 2x

y = 4x

A leaf hangs from a branch 12 feet in the air. It falls to the ground at a rate of 0.25 feet per second. Which graph could represent the leaf’s height in feet as a function of time, in seconds, after leaving the branch?

Option

What is the slope of the line represented by the equation y = x – 3?