In which line is a mistake first made when solving the following system of equations by elimination for x? 5x + 3y = 12 4x - 5y = 17

line 1
25x + 15y = 60
4x - 5y = 17

line 2
25x + 15y = 60
20x - 15y = 85

line 3
45x = 145

line 4
x = 29/9

You can find the constant of proportionality by finding the ratio of

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13