Use a regression equation for prediction
A regression model for study time \(x\) hours and score \(y\) is \(\hat{y}=6x+42\). Predict the score when \(x=5\), and state the gradient and intercept.
Worked practice: regression model
State the regression line parameters, then substitute the x-value to predict y.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.