Answer:
The 2nd, 3rd, and 8th choice
Step-by-step explanation:
You can tell if two fractions are proportional by cross multiplying the fractions. If the fractions are equivalent, then they are proportional. If they are not equivalent, they are not proportional.
Hello!
The midpoint formula is basically an average of x and y.
It is also written as:
.
With the formula above, we can substitute the given points into the equation, and simplify.

Therefore, the midpoint between points H and J is choice D, (6, 3.5).
The slope is 2 and the equation of the line is y = mx+b with m =2
Then the equation becomes: y = 2x+b. How to calculate b?
Since this line passes through the point (-3 , 4), we replace x with -3 and y=4
4= 2.(-3) + b
4 = - 6 + b
and b= 10. The final equation is : y = 2x + 10 (answer a)