Please answer! Thank you so so much and you will be rewarded in points!! If the line passes through (-4,-7) and (4,9), what is the equation of the line in standard form?

2x - y = 1
2x + y = -1
2x + y = 1
2x - y = -1

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Find the equation using the point (4,8)

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?