I need to graph a system of equations. I'll write it down below. Sorry in advance if it's hard to understand.
4x - 3y = 5 (first half of the system)
-3y = -4x + 5
-3y/-3 = -4x/-3 + 5/-3
y = 4/3x - 5/3
m=4/3 b=- 5/3
y = 4/3x - 7/3 (second half of the system)
m=4/3 b=- 7/3
Have I done everything right so far? What do I do next?
So ....?
4x - 3y = 5:
x-intercept: Substitute y = 0 and solve for x. x = 5/4. Mark it on the x-axis.
y-intercept: Substitute x = 0 and solve for y. y = -5/3. Mark it on the y-axis.
Draw a line passing through the x-intercept and the y-intercept. Done.
Why should fractions cause problems?
4x - 3y = 5 (first half of the system)
-3y = -4x + 5
-3y/-3 = -4x/-3 + 5/-3
y = 4/3x - 5/3
m=4/3 b=- 5/3
b is the y-intercept, right? Well, for the questions I've had so far b has always equaled a whole number. If it was b=7 I would put a point on (0,7). The problem is that I don't know how to graph the y-intercept when it's a fraction. Does that make sense?