4) Zachary runs steadily at 10km/hr. His distance can be modelled by the equation: y = 10x, where y gives his distance (km) in relation to time (hours). The kidnapper runs at 5km/hr (since he's carrying a princess), and is already 30km away when Zachary begins his pursuit. a) Give the equation for the kidnapper's distance (y) in relation to time (x) In Slope-intercept form (y = mx + b): Standard Form (Ax + By +C= 0): b) Use substitution or elimination to find the hours and kilometres it will take for Zachary to catch the kidnapper.

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