Linear Functions Review

A linear function creates this shape on a graph

• line

• slope

• parabola

• circle

What is the formula for slope?

• $\frac{\left(y2-y1\right)}{\left(x2-x1\right)}$

• $y=mx+b$

• $x=-b\pm4ac$

• $Ax+By=C$

Find the slope of the line that passes through the two points (-2, 5) and (-6, 15)

• $\frac{5}{2}$

• $-\frac{5}{2}$

• $\frac{2}{5}$

• $-\frac{2}{5}$

Given that the slope of a line is m= -9 and that line passes through the point (-2, 6) what is the y-intercept?

• (0, -12)

• (0, 6)

• (6,0)

• (-12,0)

How could you describe the slope of this line?

• positive

• negative

• zero

• undefined

A function can be defined by: each input gets _______ output(s)

• one

• two

• three

• four

Write the line of the equation that passes through the two points

(-4,6) and (0,19)

• $f\left(x\right)=19x-\frac{7}{2}$

• $f\left(x\right)=\frac{7}{2}x-19$

• $f\left(x\right)=\frac{7}{2}x+19$

• $f\left(x\right)=19x+\frac{7}{2}$

Which of the following describe slope? Check all that apply

• rise/run

• change in x/change in y

• m

• how steep your line is

• where x = 0

Ms. Peach drinks way too much coffee- I know, I don't need a lecture. She has already consumed 9 cups of coffee, and drinks 2 cups of coffee each hour. Write an equation that represents this scenario.

• y=9x+2

• y=2x+9

• y=18x+2

• y=-18x-2

Ms. Peach drinks way too much coffee- I know, I don't need a lecture. She has already consumed 9 cups of coffee, and drinks 2 cups of coffee each hour. How many cups of coffee has Ms. Peach had if 3 hours have passed since she had her 9th cup of coffee?

• 15 cups

• 11 cups

• 54 cups

• 6 cups