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what is the gradient and y intercept of the equation y=7x+7

gradient =7 y intercept = 7
ME
Answered by Mohammad E. • Maths tutor
4623 Views

Find the roots of the equation y = 2x^2 + 5x + 2.

The root of an equation is a point where, when the equation is plotted on a graph, it crosses the x axis. The x axis is the line y = 0, so the roots can be found by setting 0 = ax 2 + bx + c where a,b and c ...
WU
Answered by Will U. • Maths tutor
6473 Views

integrate x^2 + 3x + 4

For the x 2 term we add one to the power, and then divide by 3 to get x 3 /3 For the next term we add one to the power and divide by the new power to get 3x 2 /2 We do the same for the 4, which just goes to ...
HB
Answered by Harry B. • Maths tutor
5213 Views

Evaluate x^2 +2x -4 = 0

Using the quadratic formula (-b +- sqrt(b^2 -4ac))/2a we can sub substitute a = 1, b=2 and c = -4 to solve. The answer is x = -1 +/- sqrt(5)
AC
Answered by Adeolu C. • Maths tutor
4297 Views

A straight line L1 has equation y = 2x + 4. L2 is parallel to L1 and passes through the point (3,13). What is the equation of L2?

Firstly, If L2 is parallel to L1, the gradient of L1 = L2 . If we then take the generic equation of any straight line to be: y = mx + c, the m (gradient) of any two parallel lines will be equal! So even befo...
HP
Answered by Harvey P. • Maths tutor
16321 Views