Answer:
#5: y-intercept is (0,3) and slope is m=2.5.
#6: y-int. is (0,4.5) and slope is -0.25.
#7: y-int. is (0, 6/5) and slope is 2/5.
Step-by-step explanation:
When you see the term "y-intercept," think "x = 0." x = 0 is the equation of the y-axis, a vertical line. In the problems you've shared here, you have three tables of x- and y-values. Each table happens to have the value "0" and a corresponding y-value. In each case that y-value is the y-intercept.
Table #5: When x = 0, y = 3. Thus, the y-intercept is 3, or (0,3) Note that if x increases by 1 from 0 to 1, y increases by 2.5 from 3 to 5.5. The slope, m, is therefore rise / run = 2.5/1, or just 2.5.
