Unit 4 Practice

Find the slope of the graph. Where do you see this value in Xander’s equation?

What value does the graph touch on the y-axis? Where do you see this value in Xander’s equation?

Slope-intercept form, or y= _______x+_______, is one way to write the equation of a ____________________ relationship.

The y-intercept of a graph is the value of y where the line __________________ the y-axis, or when x = _________.

In 1 – 3, use the given information to write an equation of the line in slope-intercept form. 1) slope = -9 , y-intercept = 2

In 1 – 3, use the given information to write an equation of the line in slope-intercept form. 2) m = 4.5 , b = -10

In 1 – 3, use the given information to write an equation of the line in slope-intercept form. 3) A LINE HAS A SLOPE OF -5 AND PASSES THROUGH THE ORIGIN.

Complete the table below by recording the slope, the y-intercept and a sketch of each linear equation’s graph.

Manny needs to write an equation in slope-intercept form to represent the linear relationship between x and y in the table shown at the right. Describe how Manny can find m, the slope. Describe how Manny can find b, the y-intercept. Write an equation to represent the relationship.

In 1 – 4 write an equation in slope-intercept form to represent each linear relationship. 1) m: _______________ b: _____________ Equation: __________________________________