y=-3x+20

The slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.

y=mx+b

Find the values of m and b using the form y=mx+b.

m=-3

b=20

The slope of the line is the value of m, and the y-intercept is the value of b.

Slope: -3

y-intercept: 20

Slope: -3

y-intercept: 20

Choose 3 to substitute in for x to find the ordered pair.

Replace the variable x with 3 in the expression.

f(3)=-3⋅3+20

Simplify the result.

Multiply -3 by 3.

f(3)=-9+20

Add -9 and 20.

f(3)=11

The final answer is 11.

11

11

The y value at x=3 is 11.

y=11

y=11

Choose 2 to substitute in for x to find the ordered pair.

Replace the variable x with 2 in the expression.

f(2)=-3⋅2+20

Simplify the result.

Multiply -3 by 2.

f(2)=-6+20

Add -6 and 20.

f(2)=14

The final answer is 14.

14

14

The y value at x=2 is 14.

y=14

y=14

Create a table of the x and y values.

xy214311

xy214311

Graph the line using the slope and the y-intercept, or the points.

Slope: -3

y-intercept: 20

xy214311

Graph y=-3x+20