The straight line, L1, has equation y = -1/2x - 2 a. Write down the y intercept of L1.

b. Write down the gradient of L1.

The line L2 is perpendicular to L1 and passes through the point (3, 7).

c. Write down the gradient of the line L2.

d. Find the equation of L2. Give your answer in the form ax + by + d = 0 where a, b, d ∈ z

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion