Use equations and gradients of straight lines
A straight line passes through \((-1,-2)\) and \((4,8)\). Determine its exact gradient and y-intercept.
Worked practice: Use equations and gradients of straight lines
This guided solution develops a straight-line equation. Connect each given value to its mathematical role, apply the relationship in a justified order, and check the final object against the original conditions.
Write a full answer
Now write the solution in full, as you would in the examination. The AI checks the mathematical method or formula, substitution, algebra or calculation, notation, requested accuracy, and any interpretation or verification required by the command term.