Solve the following system of equations.

y = x - 1
x^2 + y^2 =25

a) (-3,-4) (4,3)

b) (4,3)

c) (-3,-4)

d) no solution

Option A

A) (-3,-4) (4,3)

Step-by-step explanation:

We have a system of equations composed of:

The equation of a circle that has center at point (0,0) and radius r = 5.

The equation of a line that intercepts the y-axis at point (0,1)

To solve the system we substitute the equation of the line in the equation of the circumference:

Then

We solve for x.

We divide by 2 both sides of the equation

We look for two numbers that multiply as a result -12 and that add them as a result -1.

These numbers are -4 and 3.

Therefore the factors are:

Finally the solutions are:

and

The ordered pairs are:

(-3,-4) (4,3)

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: