because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2 y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.
x | y
-2 | 2
0 | 8
2 | 14
a very small rock.
but seriously, i'm assuming that this question has to do with density of a rock. if you have a chart with rocks and their corresponding densities would be best. the density of an object can be calculated by using the following formula:
according to a chart i found that may be corresponding to a rhyolite rock since rhyolite rocks have a median density of 2.49g/cm^3 which is close to 2.45g/cm^3.
hope that !