Question

5.) which procedure could be used to graph the line represented by the following equation? Y=1/2x+3 (1 point)
A. Plot x intercept (3,0) and use slope of 1/2 to find a second point
B. plot y intercept (0,3) and use the slope of 1/2 to find a second point
C. Plot x intercept (1/2,0) and use slope of 3 to find a second point
D. Plot y intercept (0,1/2) and use slope of 3 to find a second point

6.) which of the following equations best represents the regression line for the data given in the table above? X:(1,2,4,6,8,10,11)
Y: (0,-1,0,4,8,9,8)
A.y=x+2
B: y=2x-2
C.y=-x-2
D.y=x-2


7.)Which eq

Answer 1

Let me explain this a little bit...
To find the slope and the y intercept...put your equation in y = mx + b form, which in this problem, already is. The number in the m position is the slope. So the slope is 1/2. The number in the b position is the y intercept. So the y intercept is (0,3).
The x intercept can be found by subbing in 0 for y and solving for x..
y = 1/2x + 3
0 = 1/2x + 3
-3 = 1/2x
-3/(1/2) = x
-3 * 2 = x
-6 = x
so the x intercept is (-6,0)

so our results for y = 1/2x + 3 are :
slope = 1/2
y intercept is (0,3)
x intercept is (-6,0)

so that eliminates all but 1 of the answers and I think you can figure it out.
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