Slope intercept form: y=Mx+b (where m is the slope and b is the y intercept)
So just put it into the equation
Answer: y= -8x + 4
Answer:38.4
Step-by-step explanation:
The first is in the form y=Mx+b where m is the slope and b is the y-intercept. Start at 600 on the y-axis and graph with a slope of six. The second is in the same form but the y-intercept is 0, so start at the origin and graph with a slope of 8. The last is in the form y=b+mx, so start at 1300 and graph with a slope of 3. Remember, slope is rise/run or (change in y)/(change in x). Since the domain and range start at 0 these graphs will only be in the first quadrant with an x limit of 650 and a y limit of 1500.
4(x+2) = 4·x + 4·2 = 4x + 8
3(x+7) = 3·x + 3·7 = 3x + 21
5(2x+7) = 5·2x + 5·7 = 10x + 35
5/10=2
So 2 minutes per problem
