(a) y=-2x+3
(b) y=-2x-3
(c) y=2x+3
(d) y=2x-3
Thanks.
(b) y=-2x-3
(c) y=2x+3
(d) y=2x-3
Thanks.
-
Recall slope-intercept form. y=mx+b, b is the y-intercept (when x=0), and m is the slope. You know the slope is -2, m=-2, and the intercept is 3 (as it goes through 0,3). So y=-2x+3, you can check by plugging in the coordinates and seeing if the equation holds.
-
the answer is (a)
c and d is wrong because they have positive 2 slopes.
y=mx+b the m needs to be negative since m=slope
b= the y intercept (where the line hits the y axis)
(0,3) is on the y-axis
point on y axis is positive so b must be positive
making answer (b) wrong
Good luck
c and d is wrong because they have positive 2 slopes.
y=mx+b the m needs to be negative since m=slope
b= the y intercept (where the line hits the y axis)
(0,3) is on the y-axis
point on y axis is positive so b must be positive
making answer (b) wrong
Good luck
-
A) y=-2x+3 :)
This is because -2 is the gradient,so -2 goes in the equation..
(0,3) Tells us that the line should cross the y axis through 3.
This is because -2 is the gradient,so -2 goes in the equation..
(0,3) Tells us that the line should cross the y axis through 3.