4x+3y=20 2x+y=7 How do I solve this? I forgot how to do it :/ also no answer choice
1 answer:
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Line 1;
y=-10x+1
Gradient m= -10
Gradient of line 2= 1/10
y-5=
y-5=
y=
y=-10x+1
Gradient m= -10
Gradient of line 2= 1/10
y-5=
y-5=
y=
For this, we will be using the quadratic formula, which is , with a=x^2 coefficient, b=x coefficient, and c = constant. Our equation will look like this:
Firstly, solve the multiplications and the exponents:
Next, do the addition:
Next, your equation will be split into two: . Solve them separately, and your answer will be