Answer:
y=-2x+3
Explanation:
1. The slope-intercept form is y=mx+b and therefore you have to find out the gradient of the slope (m) and the y-intercept (b).
You should first plot out the points given to you on a number plane, ie at x=-2 the corresponding y-value is at 5.
2. Then use rise/run to find the gradient of the slope:
8/4=2.
NOTE: However, since the slope is negative the gradient is also negative, therefore it is -2.
3. The last thing you have to find is the y-intercept, which in this case is when x=0. From the given values, when x=0, y=1.
4. With the information you have found you can put together the equation of the slope.
y=-2x+1