solve for using x and y by plotting the curves on a single graph (x between

y = 2x + 3

y = 3x - 10

http://i10.photobucket.com/albums/a1...1/DSC00948.jpg

Printable View

- Dec 11th 2008, 09:39 AMturbod15bTwo Simultaneous linear equations
solve for using x and y by plotting the curves on a single graph (x between

y = 2x + 3

y = 3x - 10

http://i10.photobucket.com/albums/a1...1/DSC00948.jpg - Dec 11th 2008, 10:20 AMnzmathman
y = 2x+3 has a gradient of 2 and a y-intercept of 3.

y = 3x-10 has a gradient of 3 and y-intercept of -10.

When you plot these lines they will intersect at a single point. The answer to solving this question is to find the x-coordinate of this intersection point. You could always check you're answer if you're unsure by solving the equation 2x+3 = 3x-10.