Question

please give answers. its my summer assignment for geometry.
1.Which equation has a slope of 2 and passes
through the point (3, 21)?
2.What is (3x^2-5x+1)-(-2x^2+8x-9)?
3.An isosceles triangle has a perimeter of 8x 1 5.
Which of the following could be the lengths of
two of the sides of the triangle?
4.2x + 7y = 29
-3x-8y=-31
A. (3, 5)
B. (25, 23)
C. (5, 23)
D. (23, 5)

Answer 1

Please post your problems one by one.

Answer 2

1.Which equation has a slope of 2 and passes through the point (3, 21)?

Answer 3

For the first one:
Which equation has a slope of 2 and passes
through the point (3, 21)?

There's a formula:
\[y - y_1 = m(x-x_1)\]

Now insert the values.
Solver. :)