The line AB has equation 3x + 5y = 7 (a. Find the gradient of AB)
This is an easy one as long as you remember the important equation y = mx + c. I can't express how important it is for you to learn that equation.
Step one: find y. Do this by taking 3x away from both sides and dividing by 5 so that the y is by itself. y= 7/5 - 3x/5
Step two: identify that this looks like your equation y=mx+c where m is the gradient and c is a number.
You therefore know that the gradient of AB is -3/5.
PW
Related Maths A Level answers
All answers ▸Let f(x) = 2x^3 + x^2 - 5x + c. Given that f(1) = 0 find the values of c.
If z1 = 3+2i, z2= 4-i, z3=1+i, find and simplify the following: a) z1 + z2, b) z2 x z3, c)z2* (complex conugate of z2), d) z2/z3.
Integrate ln(x/7) with respect to x
Solve the following simultaneous equations: y-3x+2=0, y^2-x-6x^2=0