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Section 8.6
Slope-Intercept Form
Can you graph the line?
-slope of ¾ and passes through the point (-2,5)
-slope of -2 and a y-intercept of 5.
Graph the Equation
32
1 xy
What is the slope?
What is the y-intercept?
2
1m
3int y
Slope-Intercept Form
m = slope
b = y-intercept
y = mx + b
Graph the Equation
74 xy
m = 4
b = -7
Find the slope and y-intercept, then graph.
1054 yx
1223 yx
15 yx
Baking A school group making cookies for a bake sale spends $75 on ingredients and then sells the cookies for $5 a dozen. The amount earned y can be represented by the equation , where x equals the number of dozens sold.
Graph the equation.
T-Shirts A T-shirt company spends $150 on materials to make T-shirts and then sells the shirts for $12 each. The amount earned y can be represented by the equation , where x represents the number of shirts sold.
Homework
P 400-401 13-31 odds; 32 – 35 all